Battery box liquid cooling plate

Abstract

The utility model discloses a battery box liquid cooling plate and a use method thereof, the battery box liquid cooling plate comprises an upper layer plate and a lower layer plate, the upper layer plate and the lower layer plate are attached to form a liquid cooling plate body; a series of main runners are arranged in the liquid cooling plate body; the water inlet is formed in the liquid cooling plate body, and the water inlet is communicated with the first end of the main flow channel; the water outlet is formed in the liquid cooling plate body, and the water outlet is communicated with the second end of the main flow channel. The flow channels are designed in parallel, the flow channel path is short, the cooling medium circulation is fast, and the heat generated by the battery cell can be fast brought to the outside of the electric box.

Description

Technical Field

[0001] The utility model belongs to the technical field of power batteries, and in particular relates to a battery box liquid cooling plate. Background Art

[0002] In the process of realizing the present invention, the inventors found that the prior art has at least the following problems:

[0003] In traditional technologies, the liquid cooling plate of the power battery has a long flow channel, a complex structure, slow circulation of the cooling medium, and poor cooling effect.

[0004] CN109818112B - A working method of a power battery liquid cooling plate with reversible flow direction, discloses a power battery liquid cooling plate with reversible flow direction, including a cooling base plate attached to the edge of the surface of the power battery, a pipeline assembly arranged on the cooling base plate, a first four-way reversing solenoid valve and a second four-way reversing solenoid valve connected between the cooling base plate and the pipeline assembly for changing the flow direction of the liquid and matching each other, a first connector with one end connected to the first four-way reversing solenoid valve and the other end inserted into the cooling base plate, and one end connected to the second four-way reversing solenoid valve, which also cannot solve the above technical problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a battery box liquid cooling plate, the flow channel is designed in parallel, the flow channel path is short, the cooling medium circulates quickly, and the heat generated by the battery core can be quickly brought to the outside of the battery box.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a battery box liquid cooling plate having:

[0007] An upper plate and a lower plate, wherein the upper plate and the lower plate are bonded together to form a liquid cooling plate body;

[0008] Main flow channel: a series of main flow channels are provided in the liquid cooling plate body;

[0009] a water inlet, provided on the liquid cooling plate body, the water inlet being connected to the first end of the main channel;

[0010] A water outlet is provided on the liquid cooling plate body, and the water outlet is connected to the second end of the main channel.

[0011] A series of main channels are evenly distributed in the liquid cooling plate body; the main channels extend from a first end to a second end of the liquid cooling plate body.

[0012] A water inlet dispersion channel is further provided on the first end of the liquid cooling plate body, and the water inlet dispersion channel is connected to the first end of a series of main channels; the water inlet is connected to the water inlet dispersion channel.

[0013] A confluence channel is further provided on the second end of the liquid cooling plate body, and the confluence channel is connected to the second ends of a series of main channels; the water outlet is connected to the confluence channel.

[0014] A water outlet channel is also provided, wherein a first end of the water outlet channel is connected to the confluence channel; and the water outlet is connected to a second end of the water outlet channel.

[0015] The width of the water outlet channel is greater than the width of the main channel.

[0016] The lower plate is provided with a series of outer convex layers and inner concave layers; a gap is formed between the outer convex layer and the upper plate, and the gap constitutes a flow channel; the inner concave layer is welded to the upper plate.

[0017] The upper plate is a flat plate; a positioning column adapted to the battery box is provided on the upper plate.

[0018] A series of reinforcement grooves are also provided on the second end of the liquid cooling plate body; and a series of reinforcement welding points are provided on both ends of the liquid cooling plate body.

[0019] The above-mentioned method of using the battery box liquid cooling plate is as follows: the battery cells are placed on the upper plate of the liquid cooling plate body, a series of main channels are arranged in parallel, and the coolant flows from the first end to the second end of the series of main channels at the same time, and then flows out through the water outlet.

[0020] One of the above technical solutions has the following advantages or beneficial effects: the flow channels are designed in parallel, the flow channel path is short, and the cooling medium circulates quickly, which can quickly bring the heat generated by the battery cell to the outside of the battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a battery box liquid cooling plate provided in an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the battery box liquid cooling plate;

[0023] Figure 3 for Figure 1 Schematic diagram of the structure of the battery box liquid cooling plate;

[0024] Figure 4 for Figure 1 Schematic diagram of the structure of the battery box liquid cooling plate;

[0025] Figure 5 for Figure 1 Schematic diagram of the structure of the battery box liquid cooling plate;

[0026] The marks in the above figures are: 21, upper plate, 22, lower plate, 221, outer convex layer, 222, inner concave layer, 23, water inlet, 24, water inlet dispersion channel, 25, main channel, 26, confluence channel, 27, water outlet channel, 28, water outlet, 29, reinforcement groove, 210, positioning column. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1 to 5 A battery box liquid cooling plate comprises: an upper plate 21 and a lower plate 22, which are bonded together to form a liquid cooling plate body; main channels 25, a series of which are provided within the liquid cooling plate body; a water inlet 23, which is provided on the liquid cooling plate body and communicates with the first end of the main channels 25; and a water outlet 28, which is provided on the liquid cooling plate body and communicates with the second end of the main channels 25. The parallel design of the channels shortens the flow path and allows for rapid cooling medium circulation, allowing heat generated by the battery cells to be quickly removed from the battery box.

[0029] A series of main channels 25 are evenly distributed throughout the liquid cooling plate body, extending from the first end to the second end. The channels are designed in parallel, resulting in short paths and rapid cooling medium circulation, quickly dissipating heat generated by the battery cells outside the enclosure. By connecting multiple channels in parallel, the temperature distribution at different locations in the liquid cooling channel is balanced, minimizing temperature differences.

[0030] A water inlet dispersion channel 24 is provided at the first end of the liquid cooling plate body. This channel communicates with the first ends of a series of main channels 25. The water inlet 23 is connected to the water inlet dispersion channel 24. The water inlet dispersion channel 24 distributes the liquid from the water inlet 23 to the various main channels 25.

[0031] A confluence channel 26 is provided at the second end of the liquid cooling plate body. This confluence channel 26 communicates with the second ends of a series of main channels 25. A water outlet 28 is also connected to the confluence channel 26. The confluence channel 26 collects the liquid at the second ends of the main channels 25, which is then discharged through the water outlet 28.

[0032] A water outlet channel 27 is further provided, a first end of which is connected to the confluence channel 26 ; and a water outlet 28 is connected to a second end of the water outlet channel 27 .

[0033] The width of the outlet channel 27 is greater than that of the main channel 25. To control the temperature distribution of the channels, the width of the outlet 28 is designed to be wider than that of the inlet 23. Because the coolant inlet 23 has a low initial temperature, the coolant gradually circulates and heats up, causing the coolant temperature to rise at the outlet 28.

[0034] The lower plate 22 is constructed with a series of convex layers 221 and concave layers 222. A gap is formed between the convex layers 221 and the upper plate 21, forming a flow channel. The concave layers 222 are welded to the upper plate 21. The upper plate 21 is a flat plate, employing a two-layer design, with a flat upper layer and a shaped lower layer. Battery cells are placed above the upper flat surface of the liquid cooling plate. This flat surface increases the contact area between the liquid cooling plate and the bottom of the battery cells, improving heat dissipation efficiency. The lower layer of the liquid cooling plate has an uneven shaped structure, with the convex portions forming a flow channel with the upper flat surface. The concave portions of the liquid cooling plate are welded to the upper flat surface to enhance structural strength.

[0035] The upper plate 21 is provided with a positioning column 210 adapted to the battery box, which plays the role of positioning the liquid cooling plate on the box.

[0036] A series of reinforcement grooves 29 are also provided on the second end of the liquid cooling plate body, and a series of reinforcement welding points are provided on both ends of the liquid cooling plate body, which serve to increase the strength of the liquid cooling plate.

[0037] The above-mentioned method of using the battery box liquid cooling plate is as follows: the battery cells are placed on the upper plate 21 of the liquid cooling plate body, a series of main channels 25 are arranged in parallel, and the coolant flows from the first end to the second end of the series of main channels 25 at the same time, and then flows out through the water outlet 28.

[0038] After adopting the above structure, the flow channels are designed in parallel, the flow channel path is short, and the cooling medium circulates quickly, which can quickly bring the heat generated by the battery core to the outside of the battery box.

[0039] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery box liquid cooling plate, characterized in that: have: An upper plate and a lower plate, wherein the upper plate and the lower plate are bonded together to form a liquid cooling plate body; Main flow channel: a series of main flow channels are provided in the liquid cooling plate body; a water inlet, provided on the liquid cooling plate body, the water inlet being connected to the first end of the main channel; a water outlet, provided on the liquid cooling plate body, the water outlet being in communication with the second end of the main channel; A series of main channels are evenly distributed in the liquid cooling plate body; the main channels extend from a first end to a second end of the liquid cooling plate body; A water inlet dispersion channel is further provided on the first end of the liquid cooling plate body, the water inlet dispersion channel being connected to the first ends of a series of main channels; the water inlet is connected to the water inlet dispersion channel; A confluence channel is further provided on the second end of the liquid cooling plate body, and the confluence channel is connected to the second ends of a series of main channels; the water outlet is connected to the confluence channel; A water outlet channel is also provided, wherein a first end of the water outlet channel is connected to the confluence channel; and the water outlet is connected to a second end of the water outlet channel; The width of the water outlet channel is greater than the width of the main channel; The lower plate is provided with a series of outer convex layers and inner concave layers; a gap is formed between the outer convex layer and the upper plate, and the gap constitutes a flow channel; the inner concave layer is welded to the upper plate.

2. The battery box liquid cooling plate according to claim 1, characterized in that: The upper plate is a flat plate; a positioning column adapted to the battery box is provided on the upper plate.

3. The battery box liquid cooling plate according to claim 2, characterized in that: A series of reinforcement grooves are also provided on the second end of the liquid cooling plate body; and a series of reinforcement welding points are provided on both ends of the liquid cooling plate body.

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